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Overview

Squeak is a modern, open source, cross-platform, fast and full-featured implementation of the powerful Smalltalk programming language and environment.

The Squeak Smalltalk system requires three files to operate correctly:

an image file containing a snapshot of a live Squeak session

a changes file containing the source code for modified methods in the image

and a copy of (or a link to) a shared system sources file containing the source code for methods that have not been modified since the last major version increment.

The image and changes cross-platform binary files contain the state of a user's Squeak session, which is persistent between sessions. Private copies of these files are therefore normally required. You can download the initial image/changes files from

Because the target devices normally do not have a graphical display, the optware squeak package does not build X11 display driver in the VM at all. You can prepare an image for server applications on your Mac or PC and run it headlessly on the slug, or prepare an image with the RemoteFrameBuffer (VNC) server running so you can connect to the nice and unique Smalltalk GUI.